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Home / Archives for Esteves A

Molecular epidemiology and host genetics of norovirus and rotavirus infections in Portuguese elderly living in aged care homes

  • Autores: Piedade J, Nordgren J, Esteves F, Esteves A, Teodósio R, Svensson L, Istrate C
  • Ano de Publicação: 2019
  • Journal: Journal of Medical Virology
  • Link: https://www.ncbi.nlm.nih.gov/pubmed/30735247

Norovirus (NoV) and rotavirus group A (RVA) are major agents of acute gastroenteritis worldwide. This study aimed to investigate their epidemiological profile in Portuguese elderly living in long-term care facilities and to assess the host genetic factors mediating infection susceptibility. From November 2013 to June 2015, 636 faecal specimens from 169 elderly, mainly asymptomatic, living […]
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Genetic diversity of norovirus in children under 5 years of age with acute gastroenteritis from Angola

  • Autores: Esteves A, Nordgren J, Tavares C, Fortes F, Dimbu R, Saraiva N, Istrate C
  • Ano de Publicação: 2018
  • Journal: Epidemiology and Infection
  • Link: https://www.ncbi.nlm.nih.gov/pubmed/29534772%20

Norovirus (NoV) is a major cause of acute gastroenteritis (AGE). In this study, we investigated the genetic diversity of NoV strains identified in children under 5 years of age with AGE in four provinces of Angola. Faecal samples from 343 children were screened for NoV by an in house real-time PCR assay and genotyping was […]
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Multiple Phlebovirus (Bunyaviridae) genetic groups detected in Rhipicephalus, Hyalomma and Dermacentor ticks from southern Portugal

  • Autores: Campino L, Cotão AJ, Esteves A, Figueira L, Maia C, Nunes M, Parreira R, Pereira A, Vieira ML
  • Ano de Publicação: 2017
  • Journal: Ticks and Tick-Borne Diseases
  • Link: https://www.sciencedirect.com/science/article/pii/S1877959X16301625

In the last decade, various research groups have reported a large diversity of new tick-borne phleboviruses, mostly prompted by the discovery of important human pathogens such as the Heartland and severe fever with thrombocytopenia syndrome viruses. Since these analyses have rarely been conducted using ticks collected from Southern Europe, this study was carried out so […]
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Clinical and laboratory profile of Zika virus infection in dengue suspected patients: A case series

  • Autores: Esteves A, Fernanda Estofolete C, Greque GV, Hardman L, Nogueira ML, Parreira R, Rahal P, Terzian AC
  • Ano de Publicação: 2016
  • Journal: Journal of Clinical Virology
  • Link: https://www.ncbi.nlm.nih.gov/pubmed/27289428

BACKGROUND: The Zika virus (ZIKV) is an emerging arthropod-borne virus related to the dengue virus (DENV), and shows a similar clinical profile as other arboviral diseases, such as dengue and chikungunya virus (CHIKV). Historically, ZIKV has been associated with sporadic cases of human infection, but is now responsible for outbreaks worldwide. In Brazil, cases have […]
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Molecular epidemiology of rotavirus in four provinces of Angola before vaccine introduction

  • Autores: Dimbu R, Esteves A, Fortes F, Istrate C, Mendes C, Nordgren J, Pereira J, Saraiva N
  • Ano de Publicação: 2016
  • Journal: Journal of Medical Virology
  • Link: http://onlinelibrary.wiley.com/doi/10.1002/jmv.24510/epdf

Angola is a sub-Saharan country in southern Africa highly affected by diarrhoeal disease with limited epidemiological data regarding etiologic agents. This study was performed during 2012-2013, prior to rotavirus vaccine introduction, with the objective to detect and characterize the rotavirus strains circulating in four provinces of the country: Huambo, Luanda, Zaire, and Cabinda. A high […]
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About GHTM

GHTM is a R&D Center that brings together researchers from IHMT with a track record in Tropical Medicine and International/Global Health. It aims at strengthening Portugal's role as a leading partner in the development and implementation of a global health research agenda. Our evidence-based interventions contribute to the promotion of equity in health and to improve the health of populations.

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+351 213 652 600
+351 213 632 105

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